Tire sidewall



FIG. 1 is a side elevational view of a tire sidewall showing my new design;

FIG. 2 is a cross-sectional view taken along 2-2 of FIG. 1, showing my design in a first environmental of use;

FIG. 3 is cross-sectional view taken along 3-3 of FIG. 1, showing my design in a second environmental of use; and,

FIG. 4 is cross-sectional view taken along 4-4 of FIG. 1, showing my design in a third environmental of use.

In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a tire sidewall, as shown and described. 